Windows Contractor in Wentzville
Upgrade your Wentzville, MO home with durable energy efficient Infinity from Marvin windows installed by trusted pros at Lakeside Windows.
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Experience the unparalleled excellence of Infinity from Marvin Windows
Enduring Quality
Unmatched Reliability
Homeowner Satisfaction
Strengthen and Beautify Your Home with Infinity from Marvin Windows
Living in Wentzville means dealing with the full range of Missouri’s seasons—and your windows need to keep up. If your windows are old, drafty, or just plain worn out, they could be driving up your energy bills and causing unnecessary maintenance. But don’t worry—we’ve got you covered.
At Replacement Windows by Lakeside, we love helping Wentzville homeowners transform their spaces with beautiful, durable, and energy-efficient Infinity from Marvin fiberglass windows. Our goal is simple: to provide window solutions that not only look great but also stand the test of time.
Premium Windows Designed to Fit Your Home's Needs
We understand that homes face unique challenges when it comes to windows. From rotting wood frames to cracked vinyl, old windows just don’t perform the way they should. That’s why we exclusively install Infinity from Marvin fiberglass windows—they’re designed to solve these common problems and then some.
- Built to last: Infinity windows are made from Ultrex, a high-performance fiberglass that’s eight times stronger than vinyl. That means no warping, cracking, or fading—no matter how extreme the weather gets.
- Save on energy bills: The argon gas between the panes provides excellent insulation, helping keep your home cool in the summer and warm in the winter.
- Endless customization: Whether you prefer a classic look or something more modern, we offer a variety of styles and finishes, including wood grain interiors that blend the natural beauty of wood with the durability of fiberglass.
Double-Hung Windows
Versatile and functional, double hung windows feature two operable sashes that tilt in for easy cleaning and customizable ventilation.
Casement Windows
Hinged at the side, casement windows swing open like a door to provide excellent ventilation and unobstructed views.
Picture Windows
Picture windows are large, fixed-pane windows designed to maximize views and natural light. Since they don’t open, they provide superior insulation and are among the most energy-efficient options available.
Infinity from Marvin Doors
In addition to windows, Infinity from Marvin also offers gorgeous fiberglass exterior doors that look stunning on every home style from historic Victorian to contemporary Ranch.
Window & Door Projects in Wentzville
Why Homeowners Trust Replacement Windows by Lakeside
As the exclusive Infinity from Marvin Gold Partner in the St. Louis area since 2006, we’ve had plenty of time to perfect the window replacement process. Here’s why homeowners trust us with their homes:
- Stress-free experience. Track your project’s progress in real time via our customer portal.
- In-house installation team. Our skilled technicians work quickly, clean up daily and take precautions to protect your landscaping. We never use third-party crews.
- No-pressure pricing. We provide transparent quotes with flexible financing options, so you can pay for your windows in small monthly installments.
- Custom options. Our team offers multiple solutions that fit your budget, so you can choose exactly what works for you.
- Lifetime warranties. Your new windows will be backed by Lakeside’s lifetime workmanship guarantee in addition to Infinity’s manufacturer warranty.
- Experience you can count on. With over 25 years of experience, we’ve helped countless homeowners in the area improve their homes with new windows.
- Minimal disruption. We use zipper walls to contain dust and complete most projects in 1–2 days, minimizing hassle. We’ll work with you to minimize disruption, thoroughly explaining the process and always ensuring your home is safe.
- Satisfaction guaranteed. We do a final walkthrough with every customer to ensure the work we’ve done meets the standard you expect.
Our Simple 3- Step Process:
Personalized Consultation
Begin with a stress-free consultation where we listen to your vision and needs, guiding you to the perfect window solutions tailored just for your home.
Precision Installation
Our expert team carries out your window installation with meticulous attention to detail, ensuring a seamless process while keeping you updated every step of the way.
Delight in Your Home’s Transformation
Revel in the beauty and enhanced efficiency of your new windows, knowing you’ve chosen the best products and service for your home.
Your Reliable Windows Contractor in Wentzville
Don’t let old, drafty windows make your home uncomfortable or outdated. With Replacement Windows by Lakeside, you can enjoy beautiful, long-lasting windows that bring comfort, style, and energy savings to your home.
It’s time to stop worrying about your windows—whether you’re hosting guests or simply relaxing at home, you deserve to enjoy the view through your new windows.
Ready to see what a difference new windows can make? Contact us for a free consultation or browse our gallery to see how we’ve transformed homes in Wentzville just like yours.
Special Offer
12 Months, No Interest/No Payments*
No interest until Fall of 2027!*
Don’t make a payment until Fall of 2027*
Executed contract date range: 9/1/26 – 9/30/26
